24 lines · cpp
1// ASan interceptor can be accessed with __interceptor_ prefix.2 3// RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s4// RUN: %clangxx_asan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s5// RUN: %clangxx_asan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s6// RUN: %clangxx_asan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s7#include <stdlib.h>8#include <stdio.h>9#include <unistd.h>10 11extern "C" void *__interceptor_malloc(size_t size);12extern "C" void *malloc(size_t size) {13 write(2, "malloc call\n", sizeof("malloc call\n") - 1);14 return __interceptor_malloc(size);15}16 17int main() {18 char *x = (char*)malloc(10 * sizeof(char));19 free(x);20 return (int)strtol(x, 0, 10);21 // CHECK: malloc call22 // CHECK: heap-use-after-free23}24